P048F048T12AL

Not Recommended for New Designs
PRM® Regulator
P048F048T12AL
S
C
NRTL
US
Non-isolated Regulator
Features
• 48 V input VI Chip® PRM®
• Adaptive Loop feedback
• Vin range 36 – 75 Vdc
• ZVS buck-boost regulator
• High density – 407 W/in3
• 1.45 MHz switching frequency
• Small footprint – 108
W/in2
• Low weight – 0.5 oz (15 g)
VIN = 36 – 75 V
VOUT = 26 – 55 V
POUT = 120 W
IOUT = 2.5 A
• 96% Efficiency
• 125 °C operation (Tj)
Product Description
©
Absolute Maximum Ratings
The VI Chip® regulator is a very efficient non-isolated
regulator capable of both boosting and bucking a wide
range input voltage. It is specifically designed to provide
a controlled Factorized Bus distribution voltage for
powering downstream VTM® Transformer — fast,
efficient, isolated, low noise Point-of-Load (POL)
converters. In combination, PRMs and VTMs form a
complete DC-DC converter subsystem offering all of the
unique benefits of Vicor’s Factorized Power
ArchitectureTM (FPA)TM: high density and efficiency; low
noise operation; architectural flexibility; extremely fast
transient response; and elimination of bulk capacitance
at the Point-of-Load (POL).
In FPA systems, the POL voltage is the product of the
Factorized Bus voltage delivered by the PRM and the
"K-factor" (the fixed voltage transformation ratio) of a
downstream VTM. The PRM controls the Factorized Bus
voltage to provide regulation at the POL. Because VTMs
perform true voltage division and current multiplication,
the Factorized Bus voltage may be set to a value that is
substantially higher than the bus voltages typically
found in "intermediate bus" systems, reducing
distribution losses and enabling use of narrower
distribution bus traces. A PRM-VTM chip set can provide
up to 100 A, or 115 W at a FPA system density of
169 A/in3, or 195 W/in3 — and because the PRM can
be located, or "factorized," remotely from the POL,
these power densities can be effectively doubled.
The PRM described in this data sheet features a unique
"Adaptive Loop" compensation feedback: a single wire
alternative to traditional remote sensing and feedback
loops that enables precise control of an isolated POL
voltage without the need for either a direct connection
to the load or for noise sensitive, bandwidth limiting,
isolation devices in the feedback path.
Parameter
Values
Unit
+In to -In
-1.0 to 85.0
Vdc
Notes
PC to -In
-0.3 to 6.0
Vdc
PR to -In
-0.3 to 9.0
Vdc
IL to -In
-0.3 to 6.0
Vdc
VC to -In
-0.3 to 18.0
Vdc
+Out to -Out
-0.3 to 59
Vdc
SC to -Out
-0.3 to 3.0
Vdc
VH to -Out
-0.3 to 9.5
Vdc
OS to -Out
-0.3 to 9.0
Vdc
CD to -Out
-0.3 to 9.0
Vdc
SG to -Out
100
mA
Continuous output current
2.5
Adc
Continuous output power
120
W
Case temperature during reflow
225
245
°C
°C
MSL 5
MSL 6
Operating junction temperature
-40 to 125
°C
T-Grade
Storage temperature
-40 to 125
°C
T-Grade
DC-DC Converter
0.01 µF
10 kΩ
VC
PC
TM
IL
NC
PR
PRM® -AL
Module
+In
VH
SC
SG
OS
NC
CD
ROS
Factorized
Bus (VF )
+Out
+In
+Out
RCD
+Out
0.4 µH
VIN
TM
VC
PC
VTM®
Module
10 Ω
–In
–Out
– In
– Out
K
Ro
– Out
The P048F048T12AL is used with any 048 input series VTM to provide a regulated and
isolated output.
PRM® Regulator
Rev 3.1
vicorpower.com
Page 1 of 14
12/2013
800 735.6200
L
O
A
D
Not Recommended for New Designs
P048F048T12AL
General Specifications
Overview of Adaptive Loop Compensation
Adaptive Loop compensation, illustrated in Figure 1, contributes to the
bandwidth and speed advantage of Factorized Power. The PRM®
monitors its output current and automatically adjusts its output voltage
to compensate for the voltage drop in the output resistance of the
VTM®. ROS sets the desired value of the VTM output voltage, Vout; RCD
is set to a value that compensates for the output resistance of the VTM
(which, ideally, is located at the point of load). For more information
on configuring a PRM & VTM pair for adaptive loop, please see
AN:024 “Accurate Point of Load Voltage Regulation Using Simple
Adaptive Loop Feedback.”
0.01 µF
10 kΩ
VC
PC
TM
IL
NC
PR
PRM® -AL
Module
+In
VH
SC
SG
OS
NC
CD
ROS
The VI Chip’s bi-directional VC port :
1. Provides a wake up signal from the PRM to the VTM that
synchronizes the rise of the VTM output voltage to that of the PRM.
2. Provides feedback from the VTM to the PRM to enable the PRM to
compensate for the voltage drop in VTM output resistance, RO.
Factorized
Bus (VF )
+Out
RCD
TM
VC
PC
+Out
0.4 µH
VIN
+Out
+In
VTM
Module
10 Ω
–In
– In
–Out
®
– Out
K
Ro
L
O
A
D
– Out
Figure 1 — With Adaptive Loop control, the output of the VTM is regulated over the load current range with only a single interconnect between the PRM and
VTM and without the need for isolation in the feedback path.
PRM® Regulator
Rev 3.1
vicorpower.com
Page 2 of 14
12/2013
800 735.6200
Not Recommended for New Designs
P048F048T12AL
Electrical Specifications
Input Specs (Conditions are at 48 VIN, 48 VOUT, full load, and 25 °C ambient unless otherwise specified)
Parameter
Input voltage range
Min
Typ
Max
Unit
36
48
75
Vdc
1
V/µs
33.8
35.3
Vdc
Input dV/dt
Input undervoltage turn-on
Input undervoltage turn-off
30.4
31.8
Input overvoltage turn-on
75.7
77.3
Vdc
Vdc
Input overvoltage turn-off
78.8
81.0
Input quiescent current
0.5
1
Input current
2.6
Input reflected ripple current
280
No load power dissipation
2.4
Internal input capacitance
5
Recommended external input capacitance
Note
Vdc
mA
PC low
Adc
mA p-p
4
See Figures 4 & 5
W
100
µF
Ceramic
µF
See Figure 5 for input filter circuit.
Source impedance dependent
[a] Will operate down to 13.5 V after start up ≥ 16 V
Input Waveforms
Figure 2 — VOUT and PC response from power up
Figure 3 — VOUT turn on waveform with inrush current – PC enabled
Reflected
Ripple
Measurement
10 A
+IN
0.01 μF
10 kΩ
VC
PC
TM
IL
NC
PR
PRM-AL
+In
+Out
–In
–Out
VH
SC
SG
OS
NC
CD
2.37 kΩ
+ OUT
1000 μF
Al-Electrolytic
–IN
Figure 4 — Input reflected ripple current at full load and 28 VIN
Figure 5 — Input filter capacitor recommendation
PRM® Regulator
Rev 3.1
vicorpower.com
Page 3 of 14
12/2013
800 735.6200
– OUT
Not Recommended for New Designs
P048F048T12AL
Electrical Specifications (continued)
Output Specs (Conditions are at 48 VIN, 48 VOUT, full load, and 25 °C ambient unless otherwise specified)
Parameter
Output voltage range
Min
Typ
Max
Unit
Note
26
48
55
Vdc
Factorized Bus voltage (Vf) set by ROS
Output power
0
120
W
Output current
0
2.5
Adc
DC current limit
2.6
3.0
Average short circuit current
3.3
Adc
IL pin floating
0.5
A
Auto recovery
Set point accuracy
1.0
1.5
%
ROS = 2.37 K, no CD resistor
Line regulation
0.1
0.2
%
Low line to high line
Load regulation
0.1
0.2
%
No CD resistor
Load regulation (at VTM output)
1.0
2.0
%
Adaptive Loop
Current share accuracy
5.5
15
%
59.4
Vdc
Efficiency
Full load
Output overvoltage set point
94.5
95.5
56
%
See Figure 6,7 & 8
Output ripple voltage
No external bypass
1.0
2.0
%
Factorized Bus, see Figure 13
With 10 µF capacitor
0.5
1.0
%
Factorized Bus, see Figure 14
1.35
1.45
1.55
MHz
200
300
ms
See Figure 2
800
1200
1600
µs
See Figure 3
µF
Ceramic
Switching frequency
Fixed frequency
Output turn-on delay
From application of power
From PC pin enable
Internal output capacitance
5
Factorized Bus capacitance
47
µF
PRM® Regulator
Rev 3.1
vicorpower.com
Page 4 of 14
12/2013
800 735.6200
Not Recommended for New Designs
P048F048T12AL
Electrical Specifications (continued)
Efficiency Charts
Efficiency & Power Dissipation -40° Case
Efficiency & Power Dissipation 25° Case
98
94
15.0
94
15.0
90
12.5
90
12.5
86
10.0
82
7.5
5.0
PD
74
2.5
70
0.0
0.3
0.5
0.8
1.0
1.3
1.5
1.8
2.0
0.0
2.5
2.3
86
7.5
78
5.0
74
2.5
70
0.0
0.3
0.5
0.8
Load Current (A)
48 V
75 V
36 V
48 V
75 V
Figure 6 — Efficiency and power dissapation vs. output current at 36 VOUT,,
-40 °C TCASE
Efficiency & Power Dissipation 100° Case
94
15.0
90
12.5
86
10.0
PD
82
7.5
78
5.0
74
2.5
70
0.0
0.3
0.5
0.8
1.0
1.3
1.5
1.8
2.0
2.3
0.0
2.5
36 V
VIN:
48 V
36 V
48 V
75 V
36 V
36
39
42
48 V
Full Load Efficiency (%)
TCASE:
75 V
35
50
65
80
95
Case Temperature (°C)
VIN
:
36 V
45
48
51
54
57
60
48 V
-55 °C
25 °C
Figure 9 — No load power, unit enabled vs. line
91
20
36 V
48 V
75 V
1.5
92
5
75 V
2.0
93
-10
0.0
2.5
2.5
94
-25
2.3
3.0
95
-40
2.0
3.5
Full Load Efficiency vs. TCASE
-55
1.8
63
66
69
Input Voltage (V)
Figure 8 — Efficiency and power dissapation vs. output current at 36 VOUT ,
100 °C TCASE
96
1.5
No Load Power Dissipation vs. Line
4.0
Load Current (A)
VIN:
1.3
Figure 7 — Efficiency and power dissapation vs. output current at 36 VOUT,
25 °C TCASE
17.5
Power Dissipation (W)
Efficiency (%)
98
1.0
Load Current (A)
Power Dissipation (W)
36 V
VIN:
10.0
PD
82
17.5
Power Dissipation (W)
78
Efficiency (%)
17.5
Power Dissipation (W)
Efficiency (%)
98
75 V
Figure 10 — Full load efficiency vs TCASE
PRM® Regulator
Rev 3.1
vicorpower.com
Page 5 of 14
12/2013
800 735.6200
100 °C
72
75
Not Recommended for New Designs
P048F048T12AL
Electrical Specifications (continued)
Figure 11 — Transient response; PRM® alone 48 Vin, 0 – 2.5 – 0 A, no load
capacitance, local loop
Figure 12 — Transient response; PRM® alone 36 Vin, 0 – 2.5 – 0 A, no load
capacitance, local loop
Figure 13 — Transient response; PRM® alone, 26 Vin, 0 – 2.5 – 0 A no load
capacitance. Local Loop
Figure 14 — PC during fault – frequency will vary as a function of line voltage.
Figure 15 — Output ripple full load no bypass capacitance. Vf = 48 Vdc
Figure 16 — Output ripple full load 10µF bypass capacitance. Vf = 48 Vdc
PRM® Regulator
Rev 3.1
vicorpower.com
Page 6 of 14
12/2013
800 735.6200
Not Recommended for New Designs
P048F048T12AL
Electrical Specifications (continued)
Auxiliary Pins (Conditions are at 48 VIN , 48 VOUT, full load, and 25 °C ambient unless otherwise specified)
Parameter
VC (VTM Control)
Pulse width
Peak voltage
PC (Primary Control)
DC voltage
Module disable voltage
Module enable voltage
Disable hysteresis
Min
Typ
Max
Unit
8
12
12
14
18
18
ms
V
4.8
2.3
5.0
2.4
2.5
100
5.2
Vdc
Vdc
Vdc
mV
Current limit
Enable delay time
Disable delay time
IL (Current Limit Adjust)
Voltage
Accuracy
PR (Parallel Port)
Voltage
Source current
External capacitance
VH (Auxiliary Voltage)
Range
Regulation
Current
SC (Secondary Control)
Voltage
Internal capacitance
External capacitance
OS (Output Set)
Set point accuracy
Reference offset
CD (Compensation Device)
External resistance
800
2.6
1.75
1.90
mA
1200
1
1600
µs
µs
1
± 15
5.15
1
V
%
6.35
V
mA
pF
100
8.7
9.0
0.04
9.3
5
1.23
1.24
0.22
Vdc
%/mA
mA p
1.25
0.7
± 1.5
±4
Referenced to –Out
Referenced to –In
Referenced to –In
Source only after start up; not to be used for
aux. supply; 100 kΩ minimum load
impedance to assure start up.
Based on DC current limit set point
Referenced to SG; See description Page 8
Typical internal bypass C= 0.1 µF
Maximum external C=0.1 µF, referenced to SG
Vdc
µF
µF
Referenced to SG
%
mV
Includes 1% external resistor
Ω
20
Note
Omit resistor for regulation at output of PRM
General Specs
Parameter
MTBF
MIL-HDBK-217F
Min
Typ
Max
Unit
Note
3.505
Mhrs
25°C, GB
cTÜVus
UL/CSA 60950-1, EN60950-1
CE Marked for Low Voltage Directive and RoHS Recast Directive, as applicable
See Mechanical Drawings, Figures 19 – 22
0.53/15
oz /g
Agency approvals
Mechanical parameters
Weight
Dimensions
Length
Width
Height
1.28/32,5
0.87 /22
0.265/6,73
in /mm
in /mm
in /mm
Thermal
Over temperature shutdown
130
Thermal capacity
Junction-to-case thermal impedance (RθJC)
Junction-to-board thermal impedance (RθJB)
Case-to-ambient
135
9.3
1.1
2.1
3.7
140
°C
Ws/°C
°C/W
°C/W
°C/W
PRM® Regulator
Rev 3.1
vicorpower.com
Page 7 of 14
12/2013
800 735.6200
Junction temperature
With 0.25” heat sink @ 300 LFM
Not Recommended for New Designs
P048F048T12AL
Pin / Control Functions
+In / -In DC Voltage Ports
The VI Chip® maximum input voltage should not be exceeded. PRMs
have internal over / undervoltage lockout functions that prevent
operation outside of the specified input range. PRMs will turn on when
the input voltage rises above its undervoltage lockout. If the input
voltage exceeds the overvoltage lockout, PRMs will shut down until the
overvoltage fault clears. PC will toggle indicating an out of bounds
condition.
AL Version
VH
SC
SG
OS
NC
CD
+OUT
–OUT
+Out / -Out Factorized Voltage Output Ports
These ports provide the Factorized Bus voltage output. The –Out port is
connected internally to the –In port through a current sense resistor.
The PRM® has a maximum power and a maximum current rating and is
protected if either rating is exceeded. Do not short –Out to –In.
TM – Factory Use Only
IL – Current Limit Adjust
The PRM has a preset, maximum, current limit set point. The IL port
may be used to reduce the current limit set point to a lower value. See
“adjusting current limits” on page 10.
PR – Parallel Port
The PR port signal, which is proportional to the PRM output power,
supports current sharing of two PRMs. To enable current sharing,
PR ports should be interconnected. Steps should be taken to minimize
coupling noise into the interconnecting bus. Terminate this port with a
10 k equivalent resistance to SG, e.g. 10 k for a single PRM, 20 k each
for 2 PRMs in parallel, 30 k each for 3 PRMs in parallel etc.. Please
consult Vicor Applications Engineering regarding additional
considerations when paralleling more than two PRMs.
VH – Auxiliary Voltage
VH is a gated (e.g. mirrors PC), non-isolated, nominally 9 Volt,
regulated DC voltage (see “Auxiliary Pins” specifications, on Page 7)
that is referenced to SG. VH may be used to power external circuitry
having a total current consumption of no more than 5 mA under either
transient or steady state conditons including turn-on.
4
3
2
B
1
A
B
C
C
D
D
F
F
E
E
G
G
H
H
K
K
J
VC
PC
TM
IL
NC
PR
J
L
L
M
M
N
N
P
+IN
–IN
P
Bottom View
Signal Name
+In
–In
VC
PC
TM
IL
PR
VH
SC
SG
OS
CD
+Out
–Out
VC – VTM Control
The VTM® Control (VC) port supplies an initial VCC voltage to
downstream VTMs, enabling the VTMs and synchronizing the rise of
the VTM output voltage to that of the PRM. The VC port also provides
feedback to the PRM to compensate for voltage drop due to the VTM
output resistance. The PRM’s VC port should be connected to the VTM
VC port. A PRM VC port can drive a maximum of two (2) VTM VC ports.
PC – Primary Control
The PRM voltage output is enabled when the PC pin is open circuit
(floating). To disable the PRM output voltage, the PC pin is pulled low.
Open collector optocouplers, transistors, or relays can be used to
control the PC pin. When using multiple PRMs in a high power array,
the PC ports must be tied together to synchronize their turn on.
During an abnormal condition the PC pin will pulse (Fig.14) as the PRM
initiates a restart cycle. This will continue until the abnormal condition
is rectified. The PC should not be used as an auxiliary voltage supply,
nor should it be switched at a rate greater than 1 Hz.
A
Designation
G1-K1,G2-K2
L1-P1, L2-P2
A1,A2
B1, B2
C1, C2
D1, D2
F1, F2
A3, A4
B3, B4
C3, C4
D3, D4
F3, F4
G3-K3, G4-K4
L3-P3, L4-P4
Figure 17 — PRM pin configuration
SC – Secondary Control
The load voltage may be controlled by connecting a resistor or voltage
source to the SC port referenced to SG. The slew rate of the output
voltage may be controlled by controlling the rate-of-rise of the voltage
at the SC port (e.g., to limit inrush current into a capacitive load).
SG – Signal Ground
This port provides a low inductance Kelvin connection to –In and
should be used as reference for the OS, CD, SC,VH and IL ports.
OS – Output Set
The application-specific value of the Factorized Bus voltage (Vf) is set
by connecting a resistor between OS and SG. Resistor value selection is
shown in Table 1 on Page 2, and described on Page 9. If no resistor is
connected, the PRM output will be approximately one volt. If set
resistor is not collocated with the PRM, a local bypass capacitor of
~200 pF may be required.
CD – Compensation Device
Adaptive Loop control is configured by connecting an external resistor
between the CD port and SG. Selection of an appropriate resistor value
(see Equation 2 on Page 9) configures the PRM to compensate for
voltage drops in the equivalent output resistance of the VTM and the
PRM-VTM distribution bus. If no resistor is connected to CD, the PRM
will be in Local Loop mode and will regulate the
+Out / –Out voltage to a fixed value.
PRM® Regulator
Rev 3.1
vicorpower.com
Page 8 of 14
12/2013
800 735.6200
Not Recommended for New Designs
P048F048T12AL
Application Information
Current Multiplier
Regulator
0.01 µF
VC
PC
TM
IL
NC
PR
10 kΩ
PRM®-AL
+In
VH
SC
SG
OS
NC
CD
VF =
ROS
+Out
+In
+Out
RCD
TM
VC
PC
0.4 µH
+Out
VIN
–In
(IL•Ro)
VL
+
K
K
10 Ω
–Out
– In
VTM®
– Out
K
Ro
L
O
A
D
– Out
Figure 18 — Adaptive Loop compensation with output voltage trimming and soft start using the SC port.
Output Voltage Setting with Adaptive Loop
Output Voltage Trimming (optional)
®
The equations for calculating ROS and RCD to set a VTM output
voltage are:
93100
ROS =
( VL • 0.8395 ) – 1
K
(1)
After setting the output voltage from the procedure above the output
may be margined down (26 Vf min) by a resistor from SC-SG using this
formula:
RdΩ =
10000 Vfd
Vfs - Vfd
Where Vfd is the desired factorized bus and Vfs is the set factorized bus.
91238
(2)
ROS
A low voltage source can be applied to the SC port to margin the load
voltage in proportion to the SC reference voltage.
VL = Desired load voltage
An external capacitor can be added to the SC port as shown in Figure 16
to control the output voltage slew rate for soft start.
RCD =
+1
VOUT = VTM output voltage
K = VTM transformation ratio
(available from appropriate VTM data sheet)
Vf = PRM output voltage, the Factorized Bus (see Figure 16)
RO = VTM output resistance
(available from appropriate VTM data sheet)
IL = Load Current
(actual current delivered to the load)
Nominal Vout
Range (Vdc)
0.8 ↔
1.6
1.1 ↔
2.2
1.6 ↔
3.3
2.2 ↔
4.4
3.3 ↔
6.6
4.3 ↔
8.8
6.5 ↔ 13.4
8.7 ↔ 17.9
13.0 ↔ 26.9
17.4 ↔ 36.0
26.0 ↔ 54.0
VTM
K Factor
1/32
1/24
1/16
1/12
1/8
1/6
1/4
1/3
1/2
2/3
1
Table 1 — 048 input series VTM K factor selection guide
PRM® Regulator
Rev 3.1
vicorpower.com
Page 9 of 14
12/2013
800 735.6200
Not Recommended for New Designs
P048F048T12AL
Application Information (continued)
OVP – Overvoltage Protection
Adjusting Current Limit
The output Overvoltage Protection set point of the P048F048T12AL is
factory preset for 56 V. If this threshold is exceeded the output shuts
down and a restart sequence is initiated, also indicated by PC pulsing.
If the condition that causes OVP is still present, the unit will again shut
down. This cycle will be repeated until the fault condition is removed.
The OVP set point may be set at the factory to meet unique high
voltage requirements.
The current limit can be lowered by placing an external resistor
between the IL and SG ports (see Figure 20 for resistor values). With
the IL port open-circuit, the current limit is preset to be within the
range specified in the output specifications table on Page 4.
PRM Output Power Versus VTM Output Power
As shown in Figure 19, the P048F048T12AL is rated to deliver 2.5 A
maximum, when it is delivering an output voltage in the range from
26 V to 48 V, and 120 W, maximum, when delivering an output
voltage in the range from 48 V to 55 V. When configuring a PRM for
use with a specific VTM, refer to the appropriate VTM data sheet. The
VTM input power can be calculated by dividing the VTM output power
by the VTM efficiency (available from the VTM data sheet). The input
power required by the VTM should not exceed the output power rating
of the PRM.
Outside of Viable Trim Range
®
RIL Resistance (KΩ)
®
33uF (ESR >= 0.85Ω) & 47uf (ESR>= 0.60Ω) - NO IL TRIM
1000
100
10
1
75%
22uF (ESR >=1.2Ω)
10uF (ESR >= 2.40Ω)
0uF
80%
85%
90%
95%
100%
% Percentage of Current Limit Setpoint
2.55
Figure 20 — RIL vs percentage of current limit. Shaded areas shown
minimum valid RIL as a function of load capacitance and ESR.
2.50
Current (A)
2.45
Input Fuse Recommendations
2.40
2.35
A fuse should be incorporated at the input to the PRM, in series with
the +In port. A fast acting fuse, NANO2 FUSE 451/453 Series 10 A
125 V, or equivalent, may be required to meet certain safety agency
Conditions of Acceptability. Always ascertain and observe the safety,
regulatory, or other agency specifications that apply to your specific
application.
Safe Operating Area
2.30
2.25
2.20
2.15
0
~
~
20 22 24 26 28 30 32 34 36 38 40 42 44 46 48 50 52 54 56 58 60
Factorized Bus Voltage (Vf)
Figure 19 — P048F048T12AL rating based on Factorized Bus voltage
The Factorized Bus voltage should not exceed an absolute limit of
55 V, including steady state, ripple and transient conditions. Exceeding
this limit may cause the internal OVP set point to be exceeded.
Product Safety Considerations
If the input of the PRM is connected to SELV or ELV circuits, the output
of the PRM can be considered SELV or ELV respectively.
If the input of the PRM is connected to a centralized DC power system
where the working or float voltage is above SELV, but less than or
equal to 75 V, the input and output voltage of the PRM should be
classified as a TNV-2 circuit and spaced 1.3 mm from SELV circuitry or
accessible conductive parts according to the requirements of
UL60950-1, CSA 22.2 60950-1, EN60950-1, and IEC60950-1.
Parallel Considerations
The PR port is used to connect two PRMs in parallel to form a higher
power array. When configuring arrays, PR port interconnection
terminating impedance is 10 k to SG. See note Page 8 and refer to
Application Note AN002. Additionally one PRM should be designated
as the master while all other PRMs are set as slaves by shorting their
SC pin to SG. The PC pins must be directly connected (no diodes) to
assure a uniform start up sequence. Consult Vicor applications
engineering for applications requiring more than two PRMs.
Applications Assistance
Please contact Vicor Applications Engineering for assistance,
1-800-927-9474, or email at [email protected]
PRM® Regulator
Rev 3.1
vicorpower.com
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Mechanical Drawings
.
2
NOTES:
mm
1. DIMENSIONS ARE inch .
2. UNLESS OTHERWISE SPECIFIED, TOLERANCES ARE:
.X / [.XX] = +/-0.25 / [.01]; .XX / [.XXX] = +/-0.13 / [.005]
3. PRODUCT MARKING ON TOP SURFACE
DXF and PDF files are available on vicorpower.com
Figure 21 — PRM® module J-Lead mechanical outline
NOTES:
mm
1. DIMENSIONS ARE inch .
2. UNLESS OTHERWISE SPECIFIED, TOLERANCES ARE:
.X / [.XX] = +/-0.25 / [.01]; .XX / [.XXX] = +/-0.13 / [.005]
3. PRODUCT MARKING ON TOP SURFACE
DXF and PDF files are available on vicorpower.com
DIMENSIONS ARE i
2 UNLESS OTHERWISE S
PRODUCT MARKING ON
Figure 22 — PRM® module J-Lead PCB land layout information
PRM® Regulator
Rev 3.1
vicorpower.com
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Mechanical Drawings (continued)
NOTES:
(mm)
1. DIMENSIONS ARE inch .
2. UNLESS OTHERWISE SPECIFIED TOLERANCES ARE:
X.X [X.XX] = ±0.25 [0.01]; X.XX [X.XXX] = ±0.13 [0.005]
3. RoHS COMPLIANT PER CST-0001 LATEST REVISION
DXF and PDF files are available on vicorpower.com
Figure 23 — PRM® module through-hole mechanical outline
X.X [X.XX] = ±0.25 [0.01]; X.XX [X.XXX] = ±0.13 [0.005]
NOTES:
3
(mm)
1. DIMENSIONS ARE inch .
2. UNLESS OTHERWISE SPECIFIED TOLERANCES ARE:
X.X [X.XX] = ±0.25 [0.01]; X.XX [X.XXX] = ±0.13 [0.005]
3. RoHS COMPLIANT PER CST-0001 LATEST REVISION
DXF and PDF files are available on vicorpower.com
Figure 24 — PRM® moduel through-hole PCB layout information
PRM® Regulator
Rev 3.1
vicorpower.com
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Configuration Options
RECOMMENDED LAND PATTERN
(NO GROUNDING CLIPS)
TOP SIDE SHOWN
NOTES:
1. MAINTAIN 3.50 [0.138] DIA. KEEP-OUT ZONE
FREE OF COPPER, ALL PCB LAYERS.
2. (A) MINIMUM RECOMMENDED PITCH IS 39.50 [1.555],
THIS PROVIDES 7.00 [0.275] COMPONENT
EDGE-TO-EDGE SPACING, AND 0.50 [0.020]
CLEARANCE BETWEEN VICOR HEAT SINKS.
(B) MINIMUM RECOMMENDED PITCH IS 41.00 [1.614],
THIS PROVIDES 8.50 [0.334] COMPONENT
EDGE-TO-EDGE SPACING, AND 2.00 [0.079]
CLEARANCE BETWEEN VICOR HEAT SINKS.
3. VI CHIP® MODULE LAND PATTERN SHOWN FOR REFERENCE ONLY;
ACTUAL LAND PATTERN MAY DIFFER.
DIMENSIONS FROM EDGES OF LAND PATTERN
TO PUSH-PIN HOLES WILL BE THE SAME FOR
ALL FULL SIZE VI CHIP PRODUCTS.
RECOMMENDED LAND PATTERN
(With GROUNDING CLIPS)
TOP SIDE SHOWN
4. RoHS COMPLIANT PER CST-0001 LATEST REVISION.
5. UNLESS OTHERWISE SPECIFIED:
DIMENSIONS ARE MM [INCH].
TOLERANCES ARE:
X.X [X.XX] = ±0.3 [0.01]
X.XX [X.XXX] = ±0.13 [0.005]
6. PLATED THROUGH HOLES FOR GROUNDING CLIPS (33855)
SHOWN FOR REFERENCE. HEAT SINK ORIENTATION AND
DEVICE PITCH WILL DICTATE FINAL GROUNDING SOLUTION.
Figure 25 — Recommended heat sink push pin location
PRM® Regulator
Rev 3.1
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Vicor’s comprehensive line of power solutions includes high density AC-DC and DC-DC modules and
accessory components, fully configurable AC-DC and DC-DC power supplies, and complete custom
power systems.
Information furnished by Vicor is believed to be accurate and reliable. However, no responsibility is assumed by Vicor for its use. Vicor makes no
representations or warranties with respect to the accuracy or completeness of the contents of this publication. Vicor reserves the right to make
changes to any products, specifications, and product descriptions at any time without notice. Information published by Vicor has been checked
and is believed to be accurate at the time it was printed; however, Vicor assumes no responsibility for inaccuracies. Testing and other quality
controls are used to the extent Vicor deems necessary to support Vicor’s product warranty. Except where mandated by government requirements,
testing of all parameters of each product is not necessarily performed.
Specifications are subject to change without notice.
Vicor’s Standard Terms and Conditions
All sales are subject to Vicor’s Standard Terms and Conditions of Sale, which are available on Vicor’s webpage or upon request.
Product Warranty
In Vicor’s standard terms and conditions of sale, Vicor warrants that its products are free from non-conformity to its Standard Specifications (the
“Express Limited Warranty”). This warranty is extended only to the original Buyer for the period expiring two (2) years after the date of shipment
and is not transferable.
UNLESS OTHERWISE EXPRESSLY STATED IN A WRITTEN SALES AGREEMENT SIGNED BY A DULY AUTHORIZED VICOR SIGNATORY, VICOR
DISCLAIMS ALL REPRESENTATIONS, LIABILITIES, AND WARRANTIES OF ANY KIND (WHETHER ARISING BY IMPLICATION OR BY OPERATION OF
LAW) WITH RESPECT TO THE PRODUCTS, INCLUDING, WITHOUT LIMITATION, ANY WARRANTIES OR REPRESENTATIONS AS TO MERCHANTABILITY,
FITNESS FOR PARTICULAR PURPOSE, INFRINGEMENT OF ANY PATENT, COPYRIGHT, OR OTHER INTELLECTUAL PROPERTY RIGHT, OR ANY OTHER
MATTER.
This warranty does not extend to products subjected to misuse, accident, or improper application, maintenance, or storage. Vicor shall not be
liable for collateral or consequential damage. Vicor disclaims any and all liability arising out of the application or use of any product or circuit and
assumes no liability for applications assistance or buyer product design. Buyers are responsible for their products and applications using Vicor
products and components. Prior to using or distributing any products that include Vicor components, buyers should provide adequate design,
testing and operating safeguards.
Vicor will repair or replace defective products in accordance with its own best judgment. For service under this warranty, the buyer must contact
Vicor to obtain a Return Material Authorization (RMA) number and shipping instructions. Products returned without prior authorization will be
returned to the buyer. The buyer will pay all charges incurred in returning the product to the factory. Vicor will pay all reshipment charges if the
product was defective within the terms of this warranty.
Life Support Policy
VICOR’S PRODUCTS ARE NOT AUTHORIZED FOR USE AS CRITICAL COMPONENTS IN LIFE SUPPORT DEVICES OR SYSTEMS WITHOUT THE EXPRESS
PRIOR WRITTEN APPROVAL OF THE CHIEF EXECUTIVE OFFICER AND GENERAL COUNSEL OF VICOR CORPORATION. As used herein, life support
devices or systems are devices which (a) are intended for surgical implant into the body, or (b) support or sustain life and whose failure to perform
when properly used in accordance with instructions for use provided in the labeling can be reasonably expected to result in a significant injury to
the user. A critical component is any component in a life support device or system whose failure to perform can be reasonably expected to cause
the failure of the life support device or system or to affect its safety or effectiveness. Per Vicor Terms and Conditions of Sale, the user of Vicor
products and components in life support applications assumes all risks of such use and indemnifies Vicor against all liability and damages.
Intellectual Property Notice
Vicor and its subsidiaries own Intellectual Property (including issued U.S. and Foreign Patents and pending patent applications) relating to the
products described in this data sheet. No license, whether express, implied, or arising by estoppel or otherwise, to any intellectual property rights
is granted by this document. Interested parties should contact Vicor's Intellectual Property Department.
The products described on this data sheet are protected by the following U.S. Patents Numbers:
5,945,130; 6,403,009; 6,710,257; 6,788,033; 6,940,013; 6,969,909; 7,038,917; 7,154,250; 7,166,898; 7,187,263; 7,202,646; 7,361,844;
7,368,957; RE40,072; D496,906; D506,438; D509,472; and for use under 6,975,098 and 6,984,965.
Vicor Corporation
25 Frontage Road
Andover, MA, USA 01810
Tel: 800-735-6200
Fax: 978-475-6715
email
Customer Service: [email protected]
Technical Support: [email protected]
PRM® Regulator
Rev 3.1
vicorpower.com
Page 14 of 14
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